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module-waveout: Correctly handle mono volume controls on waveout device

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This commit is contained in:
Maarten Bosmans 2011-07-02 12:12:43 +02:00 • committed by Colin Guthrie
parent 6addadc574
commit ed0e879cd9
1 changed files with 23 additions and 4 deletions
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25
src/modules/module-waveout.c
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@ -400,14 +400,23 @@ static int process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa
static void sink_get_volume_cb(pa_sink *s) {
struct userdata *u = s->userdata;
WAVEOUTCAPS caps;
DWORD vol;
pa_volume_t left, right;
if (waveOutGetDevCaps(u->hwo, &caps, sizeof(caps)) != MMSYSERR_NOERROR)
return;
if (!(caps.dwSupport & WAVECAPS_VOLUME))
return;
if (waveOutGetVolume(u->hwo, &vol) != MMSYSERR_NOERROR)
return;
left = PA_CLAMP_VOLUME((vol & 0xFFFF) * PA_VOLUME_NORM / WAVEOUT_MAX_VOLUME);
if (caps.dwSupport & WAVECAPS_LRVOLUME)
right = PA_CLAMP_VOLUME(((vol >> 16) & 0xFFFF) * PA_VOLUME_NORM / WAVEOUT_MAX_VOLUME);
else
right = left;
/* Windows supports > 2 channels, except for volume control */
if (s->real_volume.channels > 2)
@ -420,11 +429,21 @@ static void sink_get_volume_cb(pa_sink *s) {
static void sink_set_volume_cb(pa_sink *s) {
struct userdata *u = s->userdata;
WAVEOUTCAPS caps;
DWORD vol;
vol = s->real_volume.values[0] * WAVEOUT_MAX_VOLUME / PA_VOLUME_NORM;
if (s->real_volume.channels > 1)
vol |= (s->real_volume.values[1] * WAVEOUT_MAX_VOLUME / PA_VOLUME_NORM) << 16;
if (waveOutGetDevCaps(u->hwo, &caps, sizeof(caps)) != MMSYSERR_NOERROR)
return;
if (!(caps.dwSupport & WAVECAPS_VOLUME))
return;
if (s->real_volume.channels == 2 && caps.dwSupport & WAVECAPS_LRVOLUME) {
vol = (s->real_volume.values[0] * WAVEOUT_MAX_VOLUME / PA_VOLUME_NORM)
| (s->real_volume.values[1] * WAVEOUT_MAX_VOLUME / PA_VOLUME_NORM) << 16;
} else {
vol = (pa_cvolume_avg(&(s->real_volume)) * WAVEOUT_MAX_VOLUME / PA_VOLUME_NORM)
| (pa_cvolume_avg(&(s->real_volume)) * WAVEOUT_MAX_VOLUME / PA_VOLUME_NORM) << 16;
}
if (waveOutSetVolume(u->hwo, vol) != MMSYSERR_NOERROR)
return;